WO2023173802A1

WO2023173802A1 - Solvent-free three-in-one laminating device based on double-sided coating of intermediate layer

Info

Publication number: WO2023173802A1
Application number: PCT/CN2022/134320
Authority: WO
Inventors: 左光申; 黄顺利
Original assignee: 广州通泽机械有限公司
Priority date: 2022-03-17
Filing date: 2022-11-25
Publication date: 2023-09-21
Also published as: CN114407495A

Abstract

A solvent-free three-in-one laminating device based on the double-sided coating of an intermediate layer. An intermediate layer base material roll is unwound on a first unwinding unit; a surface layer base material roll and an inner layer base material roll are respectively unwound on a second unwinding unit and a third unwinding unit; an intermediate layer base material enters a first coating unit for front surface gluing, and an outer layer base material or an inner layer base material is subjected to primary lamination on a first lamination unit to form a double-layer laminated film; the double-layer laminated film enters a second coating unit; the second coating unit is configured to glue the reverse surface of the double-layer laminated film; the outer layer base material or the inner layer base material and the double-layer laminated film are subjected to secondary lamination on a second lamination unit to form a three-layer laminated film of which the intermediate layer base material is double-sided. The present invention can be suitable for the three-in-one lamination process of the double-sided gluing of an intermediate layer base material.

Description

A solvent-free three-in-one composite equipment based on double-sided coating of the intermediate layer

Technical field

The invention relates to solvent-free composite equipment, in particular to a solvent-free three-in-one composite equipment based on double-sided coating of an intermediate layer.

Background technique

Solvent-free three-in-one lamination refers to the process of completing solvent-free lamination of three-layer substrates in one go. It has the advantages of high production efficiency, high yield, and can avoid the disadvantages of some double-layer lamination processes, and its application is constantly expanding. The usual solvent-free three-in-one composite process uses two glue coatings and applies them to the surfaces of the two substrates to complete the composite. However, in different real fields, the surface and inner layers of the three-layer composite structure cannot be glued. Or for applications where the glue coating effect is not good, in order to complete this three-layer composite structure, it is necessary to develop a process that can use glue on both sides of the middle layer during the composite process.

Contents of the invention

The technical problem to be solved by the present invention is to provide a solvent-free three-in-one composite equipment based on double-sided coating of the intermediate layer, so as to solve the problem that the existing three-in-one solvent-free composite equipment cannot apply glue and composite on both sides of the intermediate layer base material.

In order to solve the above technical problems, the technical solution of the present invention is: a solvent-free three-in-one composite equipment based on double-sided coating of the intermediate layer. The intermediate layer base material roll is unrolled in the first unwinding unit and enters the first section of material. In the belt path, the surface base material roll and the inner base material roll are unrolled in the second unwinding unit and the third unwinding unit respectively and enter the second section of the material belt path and the third section of the material belt path, and the middle layer base material is along the A section of the material belt path enters the first coating unit for front-side coating and then enters the fourth section of the material belt path. The surface substrate or inner layer substrate guided by the second section of the material belt path is different from the surface layer or inner layer of substrate guided by the fourth section of the material belt path. The middle layer substrate is compounded for the first time in the first compounding unit to form a double-layer composite film. The double-layer composite film is guided into the second coating unit through the fifth section of the material belt path. The second coating unit treats the double-layer composite film. The back side of the middle layer substrate is coated with glue and enters the sixth section of the material belt path. The surface layer substrate or inner layer substrate guided by the third section of the material belt path and the double-layer composite film introduced by the sixth section of the material belt path The second compounding unit performs the second compounding to form a three-layer composite film coated on both sides of the middle layer base material. The three-layer composite film enters the winding unit along the seventh section of the material belt path to complete the winding.

As an improvement, a solvent-free three-in-one composite equipment based on double-sided coating of the intermediate layer includes a rack, with a first unit, a second unit, a third unit and a fourth unit arranged side by side from left to right below the rack; The third unwinding unit is arranged on the left side of the first unit; the winding unit and the second unwinding unit are arranged on the left and right parts of the lower part of the second unit; the second composite unit is arranged on the upper left side of the second unit; and the second compound unit is arranged on the lower left side of the third unit. The first coating unit, the first composite unit is arranged on the upper left of the third unit, the first unwinding unit is arranged on the lower right of the third unit; the second coating unit is arranged on the right side of the fourth unit; the first section of the material belt path It is located between the first unwinding unit and the first coating unit of the third unit. The second section of the material belt path is located between the second unwinding unit of the second unit and the first composite unit of the third unit. The third section The material belt path is located between the third unwinding unit of the first unit and the second compounding unit of the second unit. The fourth section of the material tape path is located between the first coating unit and the first compounding unit of the third unit. The five-section material belt path is located between the first compounding unit of the third unit and the second coating unit of the fourth unit, and the sixth-section material belt path is located between the second coating unit of the fourth unit and the second coating unit of the second unit. Between the compounding units, the seventh material belt path is located between the second compounding unit and the winding unit of the second unit.

As an improvement, a solvent-free three-in-one composite equipment based on double-sided coating of the intermediate layer includes a rack, with a first unit, a second unit, a third unit and a fourth unit arranged side by side from left to right below the rack; A winding unit is arranged on the left side of the first unit, and a second unwinding unit is arranged on the right side of the first unit; a first coating unit is arranged on the lower left side of the second unit, and a first composite unit is arranged on the upper left side of the second unit. The first unwinding unit is arranged on the lower right side of the second unit; the second coating unit is arranged on the lower right side of the third unit; the second composite unit is arranged on the upper right side of the third unit; the third unwinding unit is arranged on the right side of the fourth unit; The first section of the tape path is located between the first unwinding unit and the first coating unit of the second unit, and the second section of the tape path is located between the second unwinding unit of the first unit and the first composite unit of the second unit. between the third section of the material belt path is located between the third unwinding unit of the fourth unit and the second compounding unit of the third unit, and the fourth section of the material belt path is located between the first coating unit of the second unit and the first Between the composite units, the fifth section of the material belt path is located between the first composite unit of the second unit and the second coating unit of the third unit, and the sixth section of the material belt path is located between the second coating unit of the third unit and Between the second compounding unit, the seventh material belt path is located between the second compounding unit of the third unit and the winding unit of the first unit.

As an improvement, a solvent-free three-in-one composite equipment based on double-sided coating of the intermediate layer includes a rack. The first unit, the second unit and the third unit are arranged side by side from left to right below the rack; on the left side of the first unit A third unwinding unit is arranged; a winding unit and a second unwinding unit are arranged on the left and right sides of the lower part of the second unit; a second composite unit is arranged on the upper left side of the second unit; and a first coating unit is arranged on the lower left side of the third unit. , the first compounding unit is arranged on the upper left side of the third unit, the first unwinding unit is arranged on the lower right side of the third unit, and the second coating unit is arranged on the upper right side of the third unit; the first section of the material belt path is located at the third unit Between the first unwinding unit and the first coating unit, the second section of the tape path is located between the second unwinding unit of the second unit and the first compounding unit of the third unit, and the third section of the tape path is located between the second unwinding unit of the second unit and the first composite unit of the third unit. Between the third unwinding unit of the first unit and the second composite unit of the second unit, the fourth section of the material belt path is located between the first coating unit and the first composite unit of the third unit, and the fifth section of the material belt path It is located between the first compounding unit and the second coating unit of the third unit. The sixth section of the material belt path is located between the second coating unit of the third unit and the second compounding unit of the second unit. The seventh section of the material belt The bit path is located between the second composite unit of the second unit and the winding unit.

As an improvement, a solvent-free three-in-one composite equipment based on double-sided coating of the intermediate layer includes a rack. The first unit, the second unit and the third unit are arranged side by side from left to right below the rack; on the left side of the first unit A third unwinding unit is arranged; a winding unit and a second unwinding unit are arranged on the left and right sides of the lower part of the second unit; a second composite unit is arranged on the upper left side of the second unit; the first coating unit is arranged in the middle position on the left side of the third unit Unit, the first composite unit is arranged on the upper left side of the third unit, the first unwinding unit is arranged on the lower left side of the third unit, and the second coating unit is arranged on the right side of the third unit; the first section of the material belt path is located at the third unit Between the first unwinding unit and the first coating unit, the second section of the tape path is located between the second unwinding unit of the second unit and the first compounding unit of the third unit, and the third section of the tape path is located between the second unwinding unit of the second unit and the first composite unit of the third unit. Between the third unwinding unit of the first unit and the second composite unit of the second unit, the fourth section of the material belt path is located between the first coating unit and the first composite unit of the third unit, and the fifth section of the material belt path It is located between the first compounding unit and the second coating unit of the third unit. The sixth section of the material belt path is located between the second coating unit of the third unit and the second compounding unit of the second unit. The seventh section of the material belt The bit path is located between the second composite unit of the second unit and the winding unit.

As an improvement, the first coating unit and the second coating unit are both solvent-free coating units.

As an improvement, the first section of the material belt path, the second section of the material belt path, the third section of the material belt path, the fourth section of the material belt path, the fifth section of the material belt path, the sixth section of the material belt path and the seventh section Base material belt tension sensing components are installed in the material belt path.

Compared with the prior art, the beneficial effects brought by the present invention are:

1) The scope of application of the solvent-free three-in-one composite process to substrates has been increased, making it possible to perform solvent-free composites on some composite structures that cannot be coated with surface substrates. For example: in the cigarette pack industry, the problem of compounding the structure (transfer film/aluminum foil/transfer film) using a solvent-free method was solved; in the special field of betel nut packaging, the problem of using a solvent-free method for the structure (drawing film/PET/PE) was solved. Problems with solvent method compounding;

2) Improved process adaptability to some three-layer composite structures, such as the common structure of BOPP (PET)/paper/PE. Due to the sensitivity of the PE substrate to the temperature of the adhesive, this solution can avoid restrictions on the adhesive;

3) When using this solution for small and medium orders or small and medium production scale, it can complement the high-position unwinding three-in-one laminating machine (suitable for mass production). .

Description of the drawings

Figure 1 is a process flow diagram of the present invention.

Figure 2 is a schematic diagram of the four-unit short winding path model.

Figure 3 is a schematic diagram of a four-unit short compound path model.

Figure 4 is a schematic diagram of the three-unit external unwinding machine.

Figure 5 is a schematic diagram of the three-unit internal unwinding machine.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1, a solvent-free three-in-one composite equipment based on double-sided coating of the intermediate layer. The intermediate layer base material roll is unrolled in the first unwinding unit and enters the first section of the material belt path. The surface layer base material roll and the inner base material roll are unrolled in the second unwinding unit and the third unwinding unit respectively and enter the second section of the material belt path and the third section of the material belt path, and the middle layer base material enters the third section of the material belt path along the first section of the material belt path. After a coating unit performs front-side coating, it enters the fourth section of the belt path. The surface substrate or inner layer substrate guided by the second section of the belt path and the intermediate layer substrate introduced by the fourth section of the belt path are in the fourth section. A composite unit performs the first composite to form a double-layer composite film. The double-layer composite film is guided into the second coating unit through the fifth section of the material belt path. The second coating unit treats the reverse side of the middle layer substrate of the double-layer composite film. Glue is applied and enters the sixth section of the belt path. The surface base material or inner base material guided by the third section of the belt path and the double-layer composite film introduced by the sixth section of the belt path are processed in the second composite unit. The secondary compounding forms a three-layer composite film coated on both sides of the middle layer base material. The three-layer composite film enters the winding unit along the seventh section of the material belt path to complete the winding.

The following embodiments of solvent-free three-in-one composite equipment can be used to complete the double-sided glue coating composite process of the intermediate layer substrate:

Example 1

As shown in Figure 2, the four-unit short winding path model has the first unit 1, the second unit 2, the third unit 3 and the fourth unit 4 arranged side by side from left to right below the frame 13; the first unit 1 The third unwinding unit 7 is arranged on the left side; the winding unit 8 and the second unwinding unit 6 are respectively arranged on the left and right sides of the lower part of the second unit 2, and the second composite unit 12 is arranged on the upper left; the third unit 3 is arranged on the lower left The first coating unit 9, the first composite unit 10 is arranged on the upper left, and the first unwinding unit 5 is arranged on the lower right; the second coating unit 11 is arranged on the right side of the fourth unit. The belt path of this model is as follows: the first belt path 14 is located between the first unwinding unit 5 and the first coating unit 9 of the third unit 3, and the second belt path 15 is located in the second unit 3. Between the second unwinding unit 6 of 2 and the first compounding unit 10 of the third unit, the third strip path 16 is located between the third unwinding unit 7 of the first unit 1 and the second compounding unit 12 of the second unit. The fourth section of the material belt path 17 is located between the first coating unit 9 and the first compounding unit 10 of the third unit 3, and the fifth section of the material belt path 18 is located between the first compounding unit 10 and the first compounding unit 10 of the third unit 3. Between the second coating unit 11 of the fourth unit 4, the sixth section of material belt path 19 is located between the second coating unit 11 of the fourth unit 4 and the second composite unit 12 of the second unit 2. The belt path 20 is located between the second compound unit 12 of the second unit 2 and the winding unit 8 .

Example 2

As shown in Figure 3, the four-unit short compound path model has the first unit 2, the second unit 3, the third unit 4 and the fourth unit 1 arranged side by side from left to right under the frame 13; the first unit 2 is on the left The winding unit 8 is arranged on the side, and the second unwinding unit 6 is arranged on the right side; the first coating unit 9 is arranged on the lower left side of the second unit 3, the first composite unit 10 is arranged on the upper left side, and the first compounding unit 10 is arranged on the lower right side of the second unit 3. The unwinding unit 5; the second coating unit 11 is arranged on the lower right side of the third unit 4, and the second composite unit 12 is arranged on the upper right side; the third unwinding unit 7 is arranged on the right side of the fourth unit 1. The belt path of this model is as follows: the first belt path 14 is located between the first unwinding unit 5 and the first coating unit 9 of the second unit 3, and the second belt path 15 is located between the first unit 2 Between the second unwinding unit 6 and the first compounding unit 10 of the second unit 3, the third strip path 16 is located between the third unwinding unit 7 of the fourth unit 1 and the second compounding unit of the third unit 4. 12, the fourth section of the material belt path 17 is located between the first coating unit 9 and the first compounding unit 10 of the second unit 3, and the fifth section of the material belt path 18 is located between the first compounding unit 10 of the second unit 3. and the second coating unit 11 of the third unit 4, the sixth section of the material belt path 19 is located between the second coating unit 11 and the second compounding unit 12 of the third unit 4, the seventh section of the material belt path 20 Between the second composite unit 12 of the third unit and the winding unit 8 of the first unit 2.

Example 3

As shown in Figure 4, the three-unit external unwinding machine has the first unit 1, the second unit 2 and the third unit 33 arranged side by side from left to right under the frame 13; the third unit 33 is arranged on the left side of the first unit 1. The unwinding unit 7; the winding unit 8 and the second unwinding unit 6 are arranged on the left and right sides of the second unit 2 respectively, and the second composite unit 12 is arranged on the upper left; the first coating unit 9 is arranged on the lower left of the third unit 33 , the first composite unit 10 is arranged on the upper left, the first unwinding unit 5 is arranged on the lower right, and the second coating unit 11 is arranged on the upper right. The belt path of this model is as follows: the first belt path 14 is located between the first unwinding unit 5 and the first coating unit 9 of the third unit 33, and the second belt path 15 is located in the second unit 2 Between the second unwinding unit 6 and the first compounding unit 10 of the third unit 33, the third strip path 16 is located between the third unwinding unit 7 of the first unit 1 and the second compounding unit of the second unit 2. 12, the fourth section of the material belt path 17 is located between the first coating unit 9 and the first compounding unit 10 of the third unit 33, and the fifth section of the material belt path 18 is located between the first compounding unit 10 of the third unit 33. Between the second coating unit 11 and the second coating unit 11 , the sixth belt path 19 is located between the second coating unit 11 of the third unit 33 and the second composite unit 12 of the second unit 2 , and the seventh belt path 20 It is located between the second composite unit 12 of the second unit 2 and the winding unit 8 .

Example 4

As shown in Figure 5, for a three-unit internal unwinding machine, the first unit 1, the second unit 2 and the third unit 34 are arranged side by side from left to right below the frame 13; a third unit 34 is arranged on the left side of the first unit 1. The unwinding unit 7; the winding unit 8 and the second unwinding unit 6 are respectively arranged on the left and right sides of the lower part of the second unit 2, and the second composite unit 12 is arranged on the upper left; the first coating unit is arranged in the middle position on the left side of the third unit 34 9. The first composite unit 10 is arranged on the upper left, the first unwinding unit 5 is arranged on the lower left, and the second coating unit 11 is arranged on the right. The belt path of this model is as follows: the first belt path 14 is located between the first unwinding unit 5 and the first coating unit 9 of the third unit 34, and the second belt path 15 is located between the second unit 2 Between the second unwinding unit 6 and the first compounding unit 10 of the third unit 34, the third strip path 16 is located between the third unwinding unit 7 of the first unit 1 and the second compounding unit of the second unit 2. 12, the fourth section of the material belt path 17 is located between the first coating unit 9 and the first compounding unit 10 of the third unit 34, and the fifth section of the material belt path 18 is located between the first compounding unit 10 of the third unit 34. Between the second coating unit 11 and the second coating unit 11 , the sixth belt path 19 is located between the second coating unit 11 of the third unit 34 and the second composite unit 12 of the second unit 2 , and the seventh belt path 20 It is located between the second composite unit 12 of the second unit 2 and the winding unit 8 .

Each machine model in the above embodiment is configured in the first section of the material belt path, the second section of the material belt path, the third section of the material belt path, the fourth section of the material belt path, the fifth section of the material belt path, the sixth section of the material belt path and the third section of the material belt path. Base material belt

tension sensing assemblies

21, 22, 23, 24, 25, 26, 27 are provided in each of the seven belt paths. The base material belt tension sensing component and the PLC work together to control the material belt tension in each section of the path. Tension sensing types include floating rollers or fixed rollers, which are determined according to the composite structure and path distance. Generally, the fixed roller type is used for rigid substrates, small tension changes, or paths with relatively rectangular paths, such as the commonly used pillow type. Tension sensor type, and for paths with long paths or large changes in tension, the floating roller tension sensor type is used.

Each of the above machine models will add

adjustment roller assemblies

28, 29, 30, 31 on the material belt path when the material belt enters the coating unit or composite unit, in order to eliminate wrinkles in the material belt and make the unit work better. The first coating unit and the second coating unit are both solvent-free coating units.

Comparing the above models with each other: Compared with the three-unit type, the four-unit type has a larger machine length, but the integration of each unit is low, the material feeding path is simple, and the operability is good; compared with the four-unit type, the three-unit type has a high degree of integration and a small machine length. Compared with the four-unit short rewinding path model, the four-unit short rewinding path model has the shortest rewinding path after secondary lamination, which is easy to ensure the product rewinding quality; compared with the former, the latter has the shortest rewinding path before secondary lamination. 2. The unwinding path is short. Compared with the three-unit internal unwinding machine, the three-unit external unwinding machine is more convenient for the first unwinding operation and the second coating operation of the latter is more observable.

Claims

A solvent-free three-in-one composite equipment based on double-sided coating of the intermediate layer, which is characterized in that: the intermediate layer base material roll is unrolled in the first unwinding unit and enters the first section of the material belt path, and the surface layer base material roll and the inner layer are The base material roll is unrolled in the second unwinding unit and the third unwinding unit respectively and enters the second section of the material belt path and the third section of the material belt path. The middle layer base material enters the first coating along the first section of the material belt path. After the cloth unit is front-side glued, it enters the fourth section of the belt path. The surface base material or inner layer base material guided by the second section of the belt path and the middle layer base material introduced by the fourth section of the belt path are combined in the first composite The unit performs the first compounding to form a double-layer composite film. The double-layer composite film is guided into the second coating unit through the fifth section of the material belt path. The second coating unit coats the reverse side of the middle layer substrate of the double-layer composite film. The glue enters the sixth section of the material belt path, and the surface base material or inner layer substrate guided by the third section of the material belt path and the double-layer composite film introduced by the sixth section of the material belt path are processed for the second time in the second composite unit. The three-layer composite film is combined to form a three-layer composite film coated on both sides of the middle layer base material. The three-layer composite film enters the winding unit along the seventh section of the material belt path to complete the winding.
A solvent-free three-in-one composite equipment based on double-sided coating of the intermediate layer according to claim 1, characterized in that: the solvent-free three-in-one composite equipment includes a frame, and the bottom of the frame is from left to The first unit, the second unit, the third unit and the fourth unit are arranged side by side on the right; a third unwinding unit is arranged on the left side of the first unit; a rewinding unit and a second unwinding unit are respectively arranged on the left and right parts of the lower part of the second unit. The second compounding unit is arranged at the upper left of the second unit; the first coating unit is arranged at the lower left of the third unit; the first compounding unit is arranged at the upper left of the third unit; and the first unwinding unit is arranged at the lower right of the third unit; There is a second coating unit arranged on the right side of the four units; the first section of the material belt path is located between the first unwinding unit and the first coating unit of the third unit, and the second section of the material belt path is located at the second section of the second unit. Between the unwinding unit and the first composite unit of the third unit, the third section of the material belt path is located between the third unwinding unit of the first unit and the second composite unit of the second unit, and the fourth section of the material belt path is located between Between the first coating unit and the first compounding unit of the third unit, the fifth section of the material belt path is located between the first compounding unit of the third unit and the second coating unit of the fourth unit. The sixth section of the material belt The path is located between the second coating unit of the fourth unit and the second compounding unit of the second unit, and the seventh strip position path is located between the second compounding unit and the winding unit of the second unit.
A solvent-free three-in-one composite equipment based on double-sided coating of the intermediate layer according to claim 1, characterized in that: the solvent-free three-in-one composite equipment includes a frame, and the bottom of the frame is from left to The first unit, the second unit, the third unit and the fourth unit are arranged side by side on the right; a winding unit is arranged on the left side of the first unit, and a second unwinding unit is arranged on the right side of the first unit; and a third unwinding unit is arranged on the lower left side of the second unit. One coating unit, the first composite unit is arranged on the upper left side of the second unit, and the first unwinding unit is arranged on the lower right side of the second unit; the second coating unit is arranged on the lower right side of the third unit, and the first coating unit is arranged on the upper right side of the third unit. The second composite unit; the third unwinding unit is arranged on the right side of the fourth unit; the first section of the material belt path is located between the first unwinding unit and the first coating unit of the second unit, and the second section of the material belt path is located between the first unwinding unit and the first coating unit of the second unit. Between the second unwinding unit of the first unit and the first composite unit of the second unit, the third section of the material belt path is located between the third unwinding unit of the fourth unit and the second composite unit of the third unit. The four-section belt path is located between the first coating unit and the first compounding unit of the second unit, and the fifth-section belt path is located between the first compounding unit of the second unit and the second coating unit of the third unit. , the sixth section of the material belt path is located between the second coating unit and the second compounding unit of the third unit, and the seventh section of the material belt path is located between the second compounding unit of the third unit and the winding unit of the first unit.
A solvent-free three-in-one composite equipment based on double-sided coating of the intermediate layer according to claim 1, characterized in that: the solvent-free three-in-one composite equipment includes a frame, and the bottom of the frame is juxtaposed from left to right. Next to the first unit, the second unit and the third unit; the third unwinding unit is arranged on the left side of the first unit; the winding unit and the second unwinding unit are respectively arranged on the left and right parts of the lower part of the second unit, and the upper left part of the second unit is arranged There is a second lamination unit; the first coating unit is arranged at the lower left of the third unit, the first lamination unit is arranged at the upper left of the third unit, the first unwinding unit is arranged at the lower right of the third unit, and the first unwinding unit is arranged at the upper right of the third unit. There is a second coating unit; the first section of the material belt path is located between the first unwinding unit and the first coating unit of the third unit, and the second section of the material belt path is located between the second unwinding unit of the second unit and the first coating unit. Between the first compound unit of the three units, the third section of the material belt path is located between the third unwinding unit of the first unit and the second compound unit of the second unit, and the fourth section of the material belt path is located between the third unit of the third unit. Between the first coating unit and the first composite unit, the fifth section of the material belt path is located between the first composite unit and the second coating unit of the third unit, and the sixth section of the material belt path is located between the second coating unit of the third unit. Between the cloth unit and the second compounding unit of the second unit, the seventh material belt path is located between the second compounding unit and the winding unit of the second unit.
A solvent-free three-in-one composite equipment based on double-sided coating of the intermediate layer according to claim 1, characterized in that: the solvent-free three-in-one composite equipment includes a frame, and the bottom of the frame is juxtaposed from left to right. Next to the first unit, the second unit and the third unit; the third unwinding unit is arranged on the left side of the first unit; the winding unit and the second unwinding unit are respectively arranged on the left and right parts of the lower part of the second unit, and the upper left part of the second unit is arranged There is a second laminating unit; the first coating unit is arranged in the middle position on the left side of the third unit, the first laminating unit is arranged on the upper left side of the third unit, the first unwinding unit is arranged on the lower left side of the third unit, and the first unwinding unit is arranged on the right side of the third unit. There is a second coating unit; the first section of the tape path is located between the first unwinding unit and the first coating unit of the third unit, and the second section of the tape path is located between the second unwinding unit of the second unit and the first coating unit. Between the first compound unit of the three units, the third section of the material belt path is located between the third unwinding unit of the first unit and the second compound unit of the second unit, and the fourth section of the material belt path is located between the third unit of the third unit. Between the first coating unit and the first composite unit, the fifth section of the material belt path is located between the first composite unit and the second coating unit of the third unit, and the sixth section of the material belt path is located between the second coating unit of the third unit. Between the cloth unit and the second compounding unit of the second unit, the seventh material belt path is located between the second compounding unit and the winding unit of the second unit.
A solvent-free three-in-one composite equipment based on double-sided coating of the intermediate layer according to any one of claims 1 to 5, characterized in that: the first coating unit and the second coating unit are solvent-free. Solvent coating unit.
A solvent-free three-in-one composite equipment based on double-sided coating of the intermediate layer according to any one of claims 1 to 5, characterized in that: the first section of the material belt path, the second section of the material belt path, The base material belt tension sensing assembly is provided in the third section of the material belt path, the fourth section of the material belt path, the fifth section of the material belt path, the sixth section of the material belt path and the seventh section of the material belt path.